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Scientists discover new material that could revolutionize solar energy
2025-10-16 09:03:32 / MISTERE&KURIOZITETE
Scientists at the University of Cambridge have made progress that could revolutionise solar energy, discovering a new way to convert light into electricity using a single, lightweight material, potentially making solar panels cheaper, more efficient and easier to manufacture.
Published by Science Daily on Wednesday, the study presents a highly efficient method for capturing light and converting it into electricity. This innovation could revolutionize not only solar technology but also electronics, as it allows the entire process to occur within a single material.
The research focuses on an organic material called P3TTM, which has a single unpaired electron, giving it unique properties. “That’s the real magic,” said Biwen Li, lead researcher at the Cavendish Laboratory. In most organic materials, electrons typically form pairs and remain isolated from neighboring molecules.
When P3TTM molecules are close to each other, their lone electrons interact and align in a particular pattern.
Light can make an electron jump to a nearby molecule, creating charges that produce electricity. A thin P3TTM solar cell converted almost every particle of light into electricity, working very efficiently using just one material. The small amount of energy needed to do this, called the “Hubbard U,” is the cost of having two electrons in a molecule.
Dr. Petri Murto designed molecules that control how they interact and the energy needed for charge separation through Mott-Hubbard physics. This breakthrough could allow solar cells to be made from a single, low-cost, lightweight material.
The discovery is historically significant, coinciding with the 120th anniversary of the birth of Sir Nevill Mott, whose work laid the foundations for modern condensed matter physics.
"It feels like coming full circle," said Prof. Richard Friend. "Mott's insights were fundamental to my career and to our understanding of semiconductors. To now see these deep quantum mechanical rules manifest in a whole new class of organic materials and harness them for light harvesting is truly extraordinary ," he added.
“We are not just improving old designs,” said Prof. Hugo Bronstein who added that “We are writing a new chapter in the textbook, showing that organic materials are able to generate charges on their own.”
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